Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (2): 315-318.

• 传感器与信号处理 • 上一篇    下一篇

雷达下视环扫成像分辨率研究

李静1, 黄培康2, 潘旭东1, 王小虎1   

  1. 1. 中国航天科工集团公司第四研究院, 北京, 100038;
    2. 中国航天科工集团公司科技委, 北京, 100854
  • 收稿日期:2008-03-03 修回日期:2008-07-17 出版日期:2009-02-20 发布日期:2010-01-03
  • 作者简介:李静(1980- ),女,博士研究生,主要研究方向为图像处理,图像匹配辅助飞行器制导.E-mail:ljsnow0416@163.com

Study on resolution for circular scanning imaging radar

LI Jing1, HUANG Pei-kang2, PAN Xu-dong1, WANG Xiao-hu1   

  1. 1. The Fourth Academy of Chia Aerospace Science and Industry Corp., Beijing 100038, China;
    2. Science and Technology Committee Chia Aerospace Science and Industry Corp., Beijing 100854, China
  • Received:2008-03-03 Revised:2008-07-17 Online:2009-02-20 Published:2010-01-03

摘要: 雷达下视环扫成像作为一种特殊的成像方式,可在较大地域范围对感兴趣的目标快速成像,继而对飞行器定位并精确制导.对下视环扫DBS和环扫SAR两种成像模式进行了分辨率研究,纠正了一些文献在DBS分辨率计算时存在的混淆;对两种环扫模式的理论方位分辨率进行了比较;建立了飞行器末段环扫成像参数的优化模型,给出优化方法.分析了不同环扫模式的适用性,并指出相比全程环扫SAR模式,高程环扫SAR+低程环扫DBS的成像模式可为定位增加信息量,但改善量不大.

Abstract: Focuses on the resolution research for circular scanning DBS and SAR imaging,eliminates some confusions about DBS,and contrasts the azimuth resolution of both models.An image parametric optimal model is established and the method is afforded to analyze the applicability of different models.Simulation results show that the combined model can gain more information than the circular scanning SAR,but it is very limited.

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